According to a Laboratory for Climate and Environmental Sciences (LSCE) study presented on Monday, forests and other land ecosystems were less effective at combating climate change in 2023.
Intense drought in the Amazon rainforest and record wildfires in Canada significantly reduced their ability to absorb carbon dioxide.
As a result, a record amount of carbon dioxide was released into the atmosphere last year, exacerbating global warming. Normally, plant life helps slow climate change by absorbing about a third of annual emissions from fossil fuels and other human activities.
Also read: Over a third of Amazon rainforest struggle to recover from droughts, study finds
Study co-author Philippe Ciais said in an interview, “The sink is a pump, and we are pumping less carbon from the atmosphere into the land. “Suddenly, the pump is choking, and it’s pumping less.”
The study is currently being peer-reviewed by an academic journal.
However, three scientists not involved in the research told Reuters that they found its conclusions credible.
Scientists from Tsinghua University in China, the University of Exeter in England, and LSCE conducted research on the causes of this shift.
Their study, presented at the International Carbon Dioxide Conference in Manaus, Brazil, identified record-high global temperatures as a major factor.
These extreme temperatures dried out vegetation in the Amazon and other rainforests, reducing their carbon absorption capacity and contributing to unprecedented fires in Canada.